Schwartz referred to the injury report released at 4 p.m. when asked about Bush's health, as is his usual protocol.

Bush injured the knee Sunday after colliding with Arizona safety Tony Jefferson at the end of a 26-yard reception from quarterback Matthew Stafford. Bush left the game and returned the following series.

He tried to play in the third quarter, fumbled the ball and did not return after that.

“I probably shouldn’t have gone back in,” Bush said after the game, “but I went back in and tried to give it a shot. Felt like I could go but I wasn’t myself.”

Schwartz said Monday he did not believe Bush’s injury would be a long-term situation and that the tests were “encouraging” but declined to give more of an update.

Bush, who signed with Detroit in the offseason as a free agent, is the Lions’ leading rusher with 30 carries for 115 yards. He has also caught seven passes for 145 yards and a touchdown.

He has been a dynamic part of Detroit’s offense when he has played, offering the Lions another option besides star receiver Calvin Johnson.